Windows installers for Groovy 2.5.19 and 4.0.6 are now available. 2.5.19: https://groovy.jfrog.io/ui/native/dist-release-local/groovy-windows-installer/groovy-2.5.19/groovy-2.5.19.msi
4.0.6: https://groovy.jfrog.io/ui/native/dist-release-local/groovy-windows-installer/groovy-4.0.6/groovy-4.0.6.msi -Keegan